Gill, C.H. et al. 2018. A study of method development and validation for estimation of Azelastine hydrochloride in nasal spray formulations by RP-HPLC method: A STUDY OF METHOD DEVELOPMENT AND VALIDATION FOR ESTIMATION OF AZELASTINE HYDROCHLORIDE. Journal of Drug Delivery and Therapeutics. 8, 6-s (Dec. 2018), 236–240. DOI:https://doi.org/10.22270/jddt.v8i6-s.2222.